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OpenAI announced GPT-5.2 on December 11, 2025, introducing Instant, Thinking, and Pro versions. The release followed media reports that CEO Sam Altman had issued an internal “code red” to focus on ChatGPT amid competition from Google’s Gemini 3. But the available reporting does not establish that the alert caused or accelerated GPT-5.2’s release.
What OpenAI announced
OpenAI’s December 11, 2025 announcement introduced three GPT-5.2 variants. The company described them as options for different kinds of work; those descriptions are OpenAI’s positioning, not independent performance findings.
| Variant | OpenAI’s stated use | API name at launch |
|---|---|---|
| Instant | Everyday work, learning, information-seeking, and writing | gpt-5.2-chat-latest |
| Thinking | More involved coding, long-document work, math, logic, and planning | gpt-5.2 |
| Pro | Difficult questions where higher quality may justify waiting | gpt-5.2-pro |
OpenAI said rollout in ChatGPT was beginning on paid plans, including Plus, Pro, Go, Business, and Enterprise. These are launch-time details, not confirmation of availability in October 2026. The announcement also listed API access. OpenAI’s GPT-5.2 announcement
What the “code red” reports say—and what they do not prove
On December 2, 2025, the Associated Press reported that Altman had set off a “code red” alert to improve ChatGPT and delay other development priorities. The AP attributed its account of the memo to The Wall Street Journal and noted that The Information had also reported it; OpenAI had not immediately responded to a request for comment at the time. The memo itself was not published in the sources reviewed. Associated Press report on the alert
GPT-5.2’s launch came nine days later, amid coverage that framed the release against Google’s Gemini 3. That sequence is not evidence of causation. Ars Technica reported OpenAI’s pushback against the idea that the model had been rushed in response to Google, while TechCrunch quoted OpenAI product chief Fidji Simo saying it had been in development for months. The reviewed reports do not establish how, or whether, the alert affected the release date. Ars Technica’s launch coverage · TechCrunch’s launch coverage
OpenAI’s reported benchmark results
OpenAI published several GPT-5.2 Thinking benchmark results in its launch materials. They are company-reported evaluation scores, not guarantees of how the model will perform on a particular person’s work.
- GDPval: OpenAI said GPT-5.2 Thinking beat or tied top industry professionals on 70.9% of comparisons, judged by experts. GDPval covers well-specified knowledge-work tasks across 44 occupations. OpenAI also said its task comparison estimated more than 11 times the speed and less than 1% of the cost of expert professionals, based on historical metrics; speed in ChatGPT may vary. Those figures describe that evaluation, not every job or use case. OpenAI’s GDPval explanation
- SWE-Bench Pro: OpenAI reported 55.6% for GPT-5.2 Thinking on repository-based software engineering tasks.
- SWE-bench Verified: OpenAI reported 80% for GPT-5.2 Thinking.
- GPQA Diamond: OpenAI reported 92.4% for GPT-5.2 Thinking without tools.
- Error comparison: OpenAI said GPT-5.2 Thinking produced 30% fewer responses with errors than GPT-5.1 Thinking on a set of de-identified ChatGPT queries. The company noted that other models were used to detect errors and could themselves make mistakes.
Ars Technica also reported comparison figures shared with journalists at the briefing: GPT-5.2 Thinking scored 55.6% on SWE-Bench Pro, compared with 43.3% for Gemini 3 Pro and 52.0% for Claude Opus 4.5; on GPQA Diamond, it reported 92.4% for GPT-5.2 versus 91.9% for Gemini 3 Pro. These are briefing figures as reported by Ars, not a comprehensive independent comparison under shared conditions. Ars Technica’s account of the briefing figures
Launch-time API pricing
OpenAI’s December 2025 announcement listed the following API prices. They are historical launch-time prices, not a current quote.
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| Model | Input per million tokens | Cached input per million tokens | Output per million tokens |
|---|---|---|---|
| GPT-5.2 standard | $1.75 | $0.175 | $14 |
| GPT-5.2 Pro | $21 | not stated (OpenAI launch announcement) | $168 |
These prices were listed by OpenAI at launch and may have changed. Check OpenAI’s current API pricing before estimating costs. OpenAI’s GPT-5.2 announcement
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.What to take from the release
GPT-5.2 was a three-variant model launch that OpenAI presented as an upgrade for knowledge work, coding, and other demanding tasks. Its timing made the release part of a news cycle about Gemini 3 and a reported internal alert, but the public evidence supports “followed reports of a code-red push,” not “was released because of it.” Benchmark scores and launch-era access or pricing should likewise be read with their attribution and date attached.
Quick Recap
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